@charset "utf-8";
/* CSS Document */
#top {
    margin: 0 auto;
    padding-left: 150px;
    position: relative;
}
#back-top {
    position: fixed;
    bottom: 100px;
    right:4%;
}
#back-top a {
    width: 62px;
    display: block;
    text-align: center;
    color: #bbb;
    /* background color transition */
    -webkit-transition: 1s;
    -moz-transition: 1s;
    transition: 1s;
}
#back-top a:hover {
    color: #000;
}
/* arrow icon (span tag) */
#back-top span {
    width: 62px;
    height: 38px;
    display: block;
    margin-bottom: 7px;
    background: url(../images/up-arrow.png) no-repeat center center;
    opacity:0.5;
    -webkit-transition: 1s;
    -moz-transition: 1s;
    transition: 1s;
}
#back-top a:hover span {
    opacity:1;
    cursor:pointer;
}